20380725

素因数分解:

$3^2\times 5^2\times {\mathrm{239}}^1\times {\mathrm{379}}^1$

素因数の和:634

約数の個数: 36

約数和(自身を含む): 36753600

約数和(自身を除く): 16372875

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 239, 379, 717, 1137, 1195, 1895, 2151, 3411, 3585, 5685, 5975, 9475, 10755, 17055, 17925, 28425, 53775, 85275, 90581, 271743, 452905, 815229, 1358715, 2264525, 4076145, 6793575, 20380725]

約数ペア:

[(1, 20380725), (3, 6793575), (5, 4076145), (9, 2264525), (15, 1358715), (25, 815229), (45, 452905), (75, 271743), (225, 90581), (239, 85275), (379, 53775), (717, 28425), (1137, 17925), (1195, 17055), (1895, 10755), (2151, 9475), (3411, 5975), (3585, 5685)]